The cell membrane.
The outer boundary of an animal cell is the cell membrane.
Cell membrane
It depends if the cell is an animal or plant cell. If it is an animal cell then the cell membrane is the outer boundary. If it is a plant cell then the cell wall is the outer boundary.
The outer boundary of a cell is called the cell membrane, and is composed of a phospholipid bilayer.
The cell membrane. It is a lipid bilayer with proteins integrated into it for transportation into and out of the cell.
The outer boundary of a general animal cell is the cell membrane.
the cell membrane
The flexible outer boundary of the cell is called the cell membrane or plasma membrane. It acts as a barrier, controlling the movement of substances in and out of the cell. The cell membrane is composed of a double layer of phospholipids with embedded proteins.
The Cell Membrane forms the outside boundary that separates the cell from its environment.
Cell (Plasma) Membrane
For an animal cell it is the cell wall. For a plant cell it is the cell membrane. In an animal cell the cell membrane is right inside the cell wall. The cell membrane is known as "The Gatekeeper" and is the main security of the cell.
The cell membrane is the boundary that regulates what comes in and out of the cell. It is a selectively permeable barrier that controls the flow of molecules in and out of the cell to maintain homeostasis.